You can fix it from the Master Station List feature on the website. I had to do this for a station in my town that only sells Diesel (and was listed as closed for some reason and had to fix that as well). I went ahead and fixed this station for you and checked the "Diesel" box. In the future you can access the Master Station List from http://gasbuddy.com/StationMasterList_nv.aspx or under Gas Prices > Master Station List.